Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Joan L Kortbein, RD

Individual provider Registered Dietitian · NPI 1245236538

Joan L Kortbein, RD is a Registered Dietitian OR Nutrition Professional in Tomah, Wisconsin. Graduated from University of Wisconsin School of Medicine in 1990, 36 years ago. Practices with Gundersen Clinic Ltd, a 427-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
36
Trained at
University of Wisconsin School of Medicine
Licensed in
WI
In the registry since
2005
What do these letters mean?
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

1330 N Superior Ave
Tomah, WI 54660-1130
Phone: (608) 372-4111
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 900 (WI)

Record details

NPI number1245236538
Entity typeIndividual (Type 1)
GenderFemale
Credentials RD
Sole proprietorNo
NPI enumeratedJune 22, 2005
Last updated in NPPESApril 23, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Gundersen Clinic Ltd — 427 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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